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The proper fastening torque may differ depending upon
the kind or size of the bolt, the material of the workpiece
to be fastened, etc. The relation between fastening
torque and fastening time is shown in the figures.
Standard bolt
.
N m
140
(101)
(ft.lbs)
120
(87)
100
(72)
80
(58)
60
(43)
40
(29)
20
(14)
0
Fastening time
High tensile bolt
.
N m
(ft.lbs)
140
(101)
120
(87)
100
(72)
80
(58)
60
(43)
40
(29)
20
(14)
0
1.0
NOTE:
•
Hold the tool pointed straight at the bolt or nut.
•
Excessive fastening torque may damage the
bolt/nut or socket. Before starting your job,
always perform a test operation to determine the
proper fastening time for your bolt or nut.
•
If the tool is operated continuously until the
battery cartridge has discharged, allow the tool
to rest for 15 minutes before proceeding with a
fresh battery cartridge.
The fastening torque is affected by a wide variety of
factors including the following. After fastening, always
check the torque with a torque wrench.
1.
When the battery cartridge is discharged almost
completely, voltage will drop and the fastening
torque will be reduced.
2.
Socket
•
Failure to use the correct size socket will
cause a reduction in the fastening torque.
•
A worn socket (wear on the hex end or
square end) will cause a reduction in the
fastening torque.
M14(9/16")
M12(1/2")
M14(9/16")
M10(3/8")
M12(1/2")
M10(3/8")
1.0
2.0
3.0
(S)
M12(1/2")
M12(1/2")
M10(3/8")
M10(3/8")
M8(5/16")
M8(5/16")
(S)
2.0
3.0
4.0
5.0
Fastening time
3.
Bolt
•
Even though the torque coefficient and the class
of bolt are the same, the proper fastening torque
will differ according to the diameter of bolt.
•
Even though the diameters of bolts are the
same, the proper fastening torque will differ
according to the torque coefficient, the class
of bolt and the bolt length.
4.
The use of the universal joint or the extension
bar somewhat reduces the fastening force of the
impact wrench. Compensate by fastening for a
longer period of time.
5.
The manner of holding the tool or the material of
driving position to be fastened will affect the torque.
6.
Operating the tool at low speed will cause a reduc-
tion in the fastening torque.
MAINTENANCE
CAUTION:
•
Always be sure that the tool is switched off and
the battery cartridge is removed before attempt-
ing to perform inspection or maintenance.
•
Never use gasoline, benzine, thinner, alcohol
or the like. Discoloration, deformation or cracks
may result.
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by
Makita Authorized or Factory Service Centers, always
using Makita replacement parts.
OPTIONAL ACCESSORIES
CAUTION:
•
These accessories or attachments are recom-
mended for use with your Makita tool specified in this
manual. The use of any other accessories or attach-
ments might present a risk of injury to persons. Only
use accessory or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
•
Makita genuine battery and charger
NOTE:
•
Some items in the list may be included in the
tool package as standard accessories. They
may differ from country to country.
MAKITA LIMITED WARRANTY
Please refer to the annexed warranty sheet for the most
current warranty terms applicable to this product.If annexed
warranty sheet is not available, refer to the warranty details
set forth at below website for your respective country.
United States of America: www.makitatools.com
Canada: www.makita.ca
Other countries: www.makita.com
7 ENGLISH
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